diff options
| author | Laura Garcia Liebana <nevola@gmail.com> | 2016-10-22 23:36:07 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-10-27 21:46:43 +0200 |
| commit | d4f9a8fb9e9acc09b0726e19e7c8e5faaa959803 (patch) | |
| tree | 0277f97784fdda68d2e2acb6c8ba493135466a5f /src/numgen.c | |
| parent | 8a7f6de536408336770e352cde939f8cb09a644d (diff) | |
src: add offset attribute for numgen expression
Add support to add an offset to the numgen generated value.
Example:
ct mark set numgen inc mod 2 offset 100
This will generate marks with serie like 100, 101, 100, ...
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/numgen.c')
| -rw-r--r-- | src/numgen.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/numgen.c b/src/numgen.c index d9a43aa0..5c1d00a0 100644 --- a/src/numgen.c +++ b/src/numgen.c @@ -32,18 +32,22 @@ static void numgen_expr_print(const struct expr *expr) { printf("numgen %s mod %u", numgen_type_str(expr->numgen.type), expr->numgen.mod); + if (expr->numgen.offset) + printf(" offset %u", expr->numgen.offset); } static bool numgen_expr_cmp(const struct expr *e1, const struct expr *e2) { return e1->numgen.type == e2->numgen.type && - e1->numgen.mod == e2->numgen.mod; + e1->numgen.mod == e2->numgen.mod && + e1->numgen.offset == e2->numgen.offset; } static void numgen_expr_clone(struct expr *new, const struct expr *expr) { new->numgen.type = expr->numgen.type; new->numgen.mod = expr->numgen.mod; + new->numgen.offset = expr->numgen.offset; } static const struct expr_ops numgen_expr_ops = { @@ -55,7 +59,8 @@ static const struct expr_ops numgen_expr_ops = { }; struct expr *numgen_expr_alloc(const struct location *loc, - enum nft_ng_types type, uint32_t mod) + enum nft_ng_types type, uint32_t mod, + uint32_t offset) { struct expr *expr; @@ -63,6 +68,7 @@ struct expr *numgen_expr_alloc(const struct location *loc, BYTEORDER_HOST_ENDIAN, 4 * BITS_PER_BYTE); expr->numgen.type = type; expr->numgen.mod = mod; + expr->numgen.offset = offset; return expr; } |